<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>边框线和圆角</title>
    <style>
        * {
            padding: 0;
            margin: 0;
        }
        .container {
            width: 100%;
            height: 100vh;
            background-color: #fff;
            /* display: flex; */
            justify-content: center;
            padding: 20px 50px;
            box-sizing: border-box;
        }
        .title {
            width: 100%;
            height: 50px;
            display: flex;
            justify-content: space-between;
            align-items: end;
        }
        .title :first-child {
            font-size: 30px;
            font-weight: bolder;
        }
        .title :last-child {
            font-size: 18px;
            font-weight: bold;
            color: #dd5b49;
        }
        .form {
            width: 100%;
            height: 100%;
        }
        .form_item {
            width: 100%;
            box-sizing: border-box;
            padding: 10px 10px;
            border: none;
            border-bottom: 1px #dd5b49 solid;
        }
        .form_item input {
            width: 100%;
            height: 50px;
        }
        .btn_form {
            width: 100%;
            height: 60px;
            box-sizing: border-box;
            padding: 10px 30px;
        }
        .btn_form button {
            width: 100%;
            height: 100%;
            color: #fff;
            background-color: red;
            border-radius: 30px;
            border: none;
        }
        button:hover {
            background-color: pink;
        }
        /* button:active {
            background-color: pink;
        } */
    </style>
</head>
<body>
    <div class="container">
        <div class="title">
            <span>手机号登录</span>
            <span>账号登录</span>
        </div>
        <!--表单输入 -->
        <br>
        <form action="" class="form">
            <input type="text" class="form_item" placeholder="请输入手机号">
            <input type="password" class="form_item" placeholder="请输入验证码">
            <div class="btn_form">
                <button>登录</button>
            </div>
        </form>

    </div>
</body>
</html>